Physics
Fluid-Mechanics
Easy

Question

A space c y l i n d r i c a l space c a p i l l a r y space t u b e space o f space 0.2 space m m space r a d i u s space i s space m a d e space b y space j o i n i n g space t w o space c a p i l l a r i e s space T subscript 1 space a n d space T subscript 2 space o f space d i f f e r e n t space m a t e r i a l s space h a v i n g space w a t e r space c o n t a c t space a n g l e s space
o f space 0 to the power of 0 space a n d space 60 to the power of 0 comma space r e s p e c t i v e l y. space T h e space c a p i l l a r y space t u b e space i s space d i p p e d space v e r t i c a l l y space i n space w a t e r space i n space t w o space d i f f e r e n t space c o n f i g u r a t i o n s comma space c a s e space I space a n d space I I space a s space s h o w n space i n space f i g u r e. space
W h i c h space o f space t h e space f o l l o w i n g space o p t i o n left parenthesis s right parenthesis space i s left parenthesis a r e right parenthesis space c o r r e c t ?
text  (Surface tension of water  end text equals 0.075 straight N divided by straight m comma text  density of water  end text equals 1000 kg divided by straight m cubed comma text  take  end text open straight g equals 10 straight m divided by straight s squared close parentheses

  1. T h e space c o r r e c t i o n space i n space t h e space h e i g h t space o f space w a t e r space c o l u m n space r a i s e d space i n space t h e space t u b e comma space d u e space t o space w e i g h t space o f space w a t e r space c o n t a i n e d space i n space t h e space m e n i s c u s comma space w i l l space b e space
d i f f e r e n t space f o r space b o t h space c a s e s.
  2. F o r space c a s e space I comma space i f space t h e space c a p i l l a r y space j o i n t space i s space 5 space c m space a b o v e space t h e space w a t e r space s u r f a c e comma space t h e space h e i g h t space o f space w a t e r space c o l u m n space r a i s e d space i n space t h e space t u b e space w i l l space b e space m o r e space t h a n space 8.75 space c m. space
left parenthesis N e g l e c t space t h e space w e i g h t space o f space t h e space w a t e r space i n space t h e space m e n i s c u s right parenthesis
  3. F o r space c a s e space I comma space i f space t h e space j o i n t space i s space k e p t space a t space 8 space c m space a b o v e space t h e space w a t e r space s u r f a c e comma space t h e space h e i g h t space o f space w a t e r space c o l u m n space i n space t h e space t u b e space w i l l space b e space 7.5 space c m. space
left parenthesis N e g l e c t space t h e space w e i g h t space o f space t h e space w a t e r space i n space t h e space m e n i s c u s right parenthesis
  4. F o r space c a s e space I I comma space i f space t h e space c a p i l l a r y space j o i n t space i s space 5 space c m space a b o v e space t h e space w a t e r space s u r f a c e comma space t h e space h e i g h t space o f space w a t e r space c o l u m n space r a i s e d space i n space t h e space t u b e space w i l l space b e space 3.75 space c m.
left parenthesis N e g l e c t space t h e space w e i g h t space o f space t h e space w a t e r space i n space t h e space m e n i s c u s right parenthesis

The correct answers are: T h e space c o r r e c t i o n space i n space t h e space h e i g h t space o f space w a t e r space c o l u m n space r a i s e d space i n space t h e space t u b e comma space d u e space t o space w e i g h t space o f space w a t e r space c o n t a i n e d space i n space t h e space m e n i s c u s comma space w i l l space b e space
d i f f e r e n t space f o r space b o t h space c a s e s., F o r space c a s e space I comma space i f space t h e space j o i n t space i s space k e p t space a t space 8 space c m space a b o v e space t h e space w a t e r space s u r f a c e comma space t h e space h e i g h t space o f space w a t e r space c o l u m n space i n space t h e space t u b e space w i l l space b e space 7.5 space c m. space
left parenthesis N e g l e c t space t h e space w e i g h t space o f space t h e space w a t e r space i n space t h e space m e n i s c u s right parenthesis, F o r space c a s e space I I comma space i f space t h e space c a p i l l a r y space j o i n t space i s space 5 space c m space a b o v e space t h e space w a t e r space s u r f a c e comma space t h e space h e i g h t space o f space w a t e r space c o l u m n space r a i s e d space i n space t h e space t u b e space w i l l space b e space 3.75 space c m.
left parenthesis N e g l e c t space t h e space w e i g h t space o f space t h e space w a t e r space i n space t h e space m e n i s c u s right parenthesis

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